The brutal killing of Cecil, Zimbabwe's famous black mane lion, has caused outrage around the world, highlighting once more the persistent threats faced by endangered animals.

For decades, the majestic wildlife found across Africa has been a major draw for tourists wanting to catch a glimpse of roaring lions, towering elephants and rare rhinos.

But wildlife tourism should always be a case of look, but don't touch.

For several African countries, wildlife is more than a tourism treasure. It's also a key source of revenue. A recent study by the United Nations World Tourism Organization (UNTWO) compiled figures from government and tour operators throughout the continent to assess the state of the wildlife tourism industry. It found that the industry contributes 80% of international travel sales to the continent, a large percentage of the $34.2 billion African tourism industry.

One of the best performing sub-sectors within the wildlife tourism industry is gorilla treks, such as in Bwindi Forest National Park, Uganda. Permits to visit a gorilla family cost between $500-700, meaning the forest, home to roughly half the world's wild mountain gorillas, generates approximately $15 million annually. Watch: Wildlife tourism is booming in Africa

The Serengeti-Ngorongoro southern circuit, a key migration route, is another tourist hotspot. It receives 300,000 visitors a year, spending $500 million in total on trips to the 300-kilometer stretch between Arusha and Serengeti, Tanzania.

Of the countries who submitted data, 14 generated a total of approximately $142 million in entrance fees to protected parks, bolstering the coffers of various conservation initiatives. Around half of operators contribute to anti-poaching projects, and governments are taking steps to counter the elevated threat in recent years.

UNTWO worked out that across the continent, the average wildlife tour lasts 10 days, has six participants and costs $433 per day. It also found that France, the UK, the U.S., Germany and Portugal are the biggest long-haul markets for Africa.

There's more to wildlife tourism than safaris. Although 96% of operators questioned did offer them, bird watching tours, whale watching and a variety of treks also came under the UNWTO's census. One of the most popular non-safari activities in Zambia is a visit to Victoria Falls -- 30% of tourists will make the trip to the 1,708-meter wide falls, the "largest curtain of water in the world."

Globally there were 12 million wildlife tourism trips in 2013 (the last full year of data available), and numbers are rising 10% annually, suggesting positive signs for the industry -- should it counter the existential threats to it, such as "the dramatic increasein poaching and illicit trade of wildlife products since 2005," which "threatens to undermine conservation achievements," according to UNTWO.

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Frida Ghitis: Outrage over Cecil trophy kill went viral, spawned outrage backlash from those who say moral compass is skewed

What about human suffering in Zimbabwe, Syria, among refugees?

Frida Ghitis is a world affairs columnist for the Miami Herald and World Politics Review and a former CNN producer and correspondent. Follow her @FridaGhitis. The opinions expressed in this commentary are hers.

(CNN)Of all the stories you heard in the news in the past few days, which one moved you the most? Which outraged you, brought you to tears, led you to action? Which did you talk about with your friends, post on Facebook, discuss on Twitter? If the answer is the killing of Cecil the lion, you are in lots of company.

Frida Ghitis

By now, it seems, most people agree that the killing, apparently for fun, of the majestic lion by a Minnesota dentist visiting Zimbabwe was a perplexing act of pointless cruelty and cowardice. It spawned millions of posts on Facebook and Twitter -- a kind of outrage tsunami.

Cecil, who was apparently well-known and loved in the natural park where he lived in Zimbabwe, died in a most unnatural way, lured from his home and slaughtered. (The dentist, now perhaps fearing for his life, has apparently gone into hiding.)

The intensity of the backlash over the trophy killing has triggered a counter-backlash. Why, some are now asking, do people care so much about the death of a lion when so many human beings are suffering and dying? The surge of sorrow for a dead lion, they say, when compared to the relative quiet about other wrongs, reveals a moral flaw in our humanity, a defect in our moral compass.

The brutal killing of Cecil, Zimbabwe's famous black mane lion, has caused outrage around the world, highlighting once more the persistent threats faced by endangered animals.

For decades, the majestic wildlife found across Africa has been a major draw for tourists wanting to catch a glimpse of roaring lions, towering elephants and rare rhinos.

But wildlife tourism should always be a case of look, but don't touch.

For several African countries, wildlife is more than a tourism treasure. It's also a key source of revenue. A recent study by the United Nations World Tourism Organization (UNTWO) compiled figures from government and tour operators throughout the continent to assess the state of the wildlife tourism industry. It found that the industry contributes 80% of international travel sales to the continent, a large percentage of the $34.2 billion African tourism industry.

One of the best performing sub-sectors within the wildlife tourism industry is gorilla treks, such as in Bwindi Forest National Park, Uganda. Permits to visit a gorilla family cost between $500-700, meaning the forest, home to roughly half the world's wild mountain gorillas, generates approximately $15 million annually. Watch: Wildlife tourism is booming in Africa

The Serengeti-Ngorongoro southern circuit, a key migration route, is another tourist hotspot. It receives 300,000 visitors a year, spending $500 million in total on trips to the 300-kilometer stretch between Arusha and Serengeti, Tanzania.

Of the countries who submitted data, 14 generated a total of approximately $142 million in entrance fees to protected parks, bolstering the coffers of various conservation initiatives. Around half of operators contribute to anti-poaching projects, and governments are taking steps to counter the elevated threat in recent years.

UNTWO worked out that across the continent, the average wildlife tour lasts 10 days, has six participants and costs $433 per day. It also found that France, the UK, the U.S., Germany and Portugal are the biggest long-haul markets for Africa.

There's more to wildlife tourism than safaris. Although 96% of operators questioned did offer them, bird watching tours, whale watching and a variety of treks also came under the UNWTO's census. One of the most popular non-safari activities in Zambia is a visit to Victoria Falls -- 30% of tourists will make the trip to the 1,708-meter wide falls, the "largest curtain of water in the world."

Globally there were 12 million wildlife tourism trips in 2013 (the last full year of data available), and numbers are rising 10% annually, suggesting positive signs for the industry -- should it counter the existential threats to it, such as "the dramatic increasein poaching and illicit trade of wildlife products since 2005," which "threatens to undermine conservation achievements," according to UNTWO.

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This view is bringing together an unlikely collection of suddenly like-minded critics. From the left and the right, there is a growing sense that the outpouring of grief for Cecil is unseemly.

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Some note that if we're suddenly looking at Zimbabwe, now would be a fine time to gaze beyond the fate of a lion. The country is a showcase of misrule by a president who has held power for 28 years, destroying the country's economic base and spurring the kind of hopelessness, hunger and poverty that, among other things, leads to poaching wild animals.

Much of the population is destitute. Zimbabwe's wildlife is devastated. And understandably, some who struggle to live there are bemused at the circumstances of this new attention.

Outrage, too, is playing out over social media.

A Facebook page titled "Shame Lion Killer Dr Walter Palmer," at last count with 13,000 members, carried some of the angry criticism. One writer posted a question: "What's more appalling, the death of ONE lion...or the 30,000 children that die from hunger daily?" The obvious answer could be discerned from the accompanying photos of emaciated children and the hashtag #endworldhunger.

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Twitter, too, was filled with bitter recrimination against the lion lovers.

"Since the tragic slaying of Cecil the Lion, 1,286 people have been killed in Syria, mostly by the regime's war planes," read one posting. Another sardonic tweet: "I wish Bashar al Assad would kill a lion. Maybe then we would care enough to do something about Syria." Another lamented, "More than 220,000 #Syria-ns died & millions displaced but the world would rather mourn a lion."

It wasn't just hungry children and Syrian war victims on the minds of those objecting to the depth of sorrow for Cecil. The writer Heather Wilhelm expounded on our "broken outrage meter," noting how the digital age has brought along "the thrill of discovering a new World's Most Despicable Person," a game that leads the mobs to judge and shame.

Clearly, paying tens of thousands of dollars to shoot an animal is a mystifying, despicable form of entertainment. But it happens every day with no noticeable global outcry.

But the fact that the lion had a name, Cecil, humanized him. Thousands of heartbroken Cecil fans had never heard of him. And, in this era of lightning-fast communications, the outrage (deserved at any pointless, unjustified killing) spread quickly.

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The late night comic Jimmy Kimmel choked back tears in a four-minute monologue about the lion and his killer ("I'm not against hunting," he explained, saying it's OK to kill animals when it's for food, to control population, or "part of your culture.") In this case, he had no mercy for the evil dentist, -- who has apparently gone into hiding. Said Kimmel: "Is it that difficult for you to get an erection that you need to kill things?" he asked, eliciting cheers from the crowd.

Is it wrong to cry over a lion?

No, any sign of compassion, of caring, is a welcome reminder that we have not lost our humanity. And the right vs. wrong calculation is easy to understand in this case. But compare it to the human abhorrence for injustice that might better motivate us to fight hunger or war or disease.

Ending world hunger is not impossible, but it's not simple or easy. And yet, the fact that it is difficult does not excuse us from the urgency of trying.

No, there is nothing morally flawed in being outraged about the death of a gorgeous lion. Go ahead, pat yourself on the back over that. Sign a petition, even.

But there is something deeply wrong in not caring, not doing more to stop the attacks that continue to kill thousands in Syria; or about the millions of suffering refugees created by war and terror--- the highest numbers since World War II -- or about the 9 million people (3 million of them children!) who die of hunger-related causes every year.

Of everything that happened in the world in the past few days, what do you think deserves the most urgent attention?